Air gauge



FIG. 1 is an elevational view illustrating a preferred embodiment of the present invention;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof, said front view being the same as the rear view;

FIG. 5 is a right side view, the left side view being the same as the right side view;

FIG. 6 is a view taken along circle 6 in FIG. 1 and enlarged for clarity;

FIG. 7 is a view taken along circle 7 in FIG. 4 and enlarged for clarity;

FIG. 8 is a view taken along circle 8 in FIG. 5 and enlarged for clarity;

FIG. 9 is a view similar to FIG. 6, but illustrating a modification thereof;

FIG. 10 is a view similar to FIG. 7, but illustrating a modification thereof; and,

FIG. 11 is a view similar to FIG. 8, but illustrating a modification thereof.

The broken line showing of the air gauge's base portion is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

The ornamental design for an air gauge, as shown and described. 